Flippers of Penguins and Dolphins are examples of:
Option: 1 Adaptive radiation
Option: 2 Convergent evolution
Option: 3 Industrial melain
Option: 4 Natural selection
Flippers of penguin and dolphins have different structures but similar functions and thus are categorized under analogous organs. Also, Penguin and dolphins are not closely related to each other but have evolved the similar traits ( as per this question - flippers) therefore, show convergent type of evolution.